Adjustable-spring seat-pillar and saddle-support for motor-cycles.



J. SMITH. ADJUSTABLE SPRING SEAT PILLAR AND SADDL'E SUPPORT FOR MOTORCYCLES. APPLICATION FILED DEO.10, 1912.

1,092,407. Patented Apr. 7, 19-14.

OFICE.

JOSEPH SMITH, 0F MANCHESTER, ENGLAND.

Specification of Letters Patent.

Patented Apr. *7, 1914.

Application filed December 10, 1912. Serial No. 736,013.

To all whom it may concern Be itknown that I, J osnrrr SMITH, subject ofthe King of Great Britain, residing at 64 Lower Broughton road, Salford,Manchester, England, have invented new and useful Improvements inAdjustable-Spring Seat-Pillars and Saddle-Supports for Motor- Gycles, ofwhich the following is a specification.

This invention relates to improvements in the construction of adjustablespring seat pillars and saddle supports for motor cycles the object ofwhich is to insure the rider always being perfectly balanced over thespring and at the same time make it practically impossible to developside shake and also enable the adjustment of the spring, to suit theweight of the rider, tobe easily accomplished.

The invention is illustrated on the accompanying drawings in which:

Figure 1 is a part sectional side view of a portion of the frame of acycle with my improvements attached thereto in position. Fig. 2 is afront view of one of the fittings. Fig. 3 is a side view of the innertube which supports the saddle tube. Fig. t. is a front view of Fig. 3.Fig. 5 is a section of Fig. taken on the line A-B. Fig. 6 is a plan of abridge piece. Fig. 7 is a side elevation of Fig. 6. Fig. 8 is aninverted plan of the saddle supporting tube. Fig. 9 is a top plan viewof Fig. 8.

In carrying this invention into practice the spring 1, through which theleft handed screw spindle 2, for adjusting the tension on the spring,passes, is held in the tube 3 by the lower projecting end of the springfitting. into a slot in the bottom portion of said tube 3 and the upperprojecting end in to a slot in the adjusting nut 4 which screws on tothe spindle 2, or in any other suitable manner. The inner tube 5, whichis made to slide easily in the tube 3, is provided with a U shaped upperextremity 6 and is formed with a solid part 7 through which a hole 8 isdrilled to permit the upper portion of the screw-threaded spindle 2 topass through. Two slots 9 and 10 are made in the sides of the Uextremity 6 into which a bridge piece 11 fits, the upper end of thescrew-threaded spindle 2 passing through a hole 12 in said bridge pieceand being held rigid by a nut 13. A bracket 1a is fixed upon the toptube or stay 15 of the cycle and is provided with jaws 16 between whichone end of the saddle supporting tube or rod 17 is hinged. This tube orbar 17 has a bearing or rests in the U part 6 of the tube 5 as seen inFig.

1 and is provided with slots 18 and 19.

through which the screw-threaded spindle 2 passes, theone slot 18 on theunderneath part being shorter than the top one 19. The tube or bar 17 isalso provided with a nose or incline 20 which bears against a similarincline 21 made on the bottom of the U portion 6.

The anode of putting the parts together is as follows: Thescrew-threaded spindle and spring being secured in their tube are theninserted in the tube or stay 21 0f the cycle as shown in Fig. 1, thetube 5 is placed in position the spindle projecting slightly above itsU-shaped upper end 6. The saddle supporting tube or rod 17 is thenplaced in position the screw-threaded spindle going through the slots 18and 19, the fore end of the tube 17 is placed between the jaws 16 on thefitting 14 and hinged there by means of a set screw 23 and nut. Thebridge piece 11 is then placed across the U piece 6 lying in the slots 9and 10, the screw-threaded spindle projecting through it and is securedby a nut 13. The saddle is fixed upon the rear end of the tube or rod 17and upon any weight or pressure being applied from any cause the nose orincline part 20 will bear upon its inclined seating on the bottom of theU shaped part 6 of the tube 5 forcing it down and so compressing thespring at the same time thrusting it forward slightly so that it shallnot grind against the side of the tube 22. To adjust the tension on thespring it is necessary to take the set screw 23 out of the hinged parton the bracket 14, tilt the tube or rod 17 upward until clear of thejaws 16 and turn to the right to tighten and to the left to slacken thetension.

What I claim as my invention and wish to secure by Letters Patent is 1.In spring seat pillars and saddle supports for motor cycles a tubehaving a U shaped upper end, an inclined bearing surface on the base ofsaid U shaped portion, a yielding support for said tube, a saddlesupport having a correspondingly inclined bearing surface fitting insaid U shaped portion, and means for holding said saddle support in saidU-shaped portion, said saddle ingly inclined bearing surface fitting insaid U shaped portion, a bracket mounted on the top rail-of the cycletowhich the front end of said saddle support is hinged, a

bridge piece fitting in slots-in the extremities of the U shapedportion, a tube containinga spring i'nthe upper end of Which tube the -Ushape ended tube fits, a spindle v JOSEPH SMITH.

' Witnesses DENTON INGHENY, HERBERT-D. JAMEsoN.

c'opies'of this patent maybe obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

